release/src-rt-6.x.4708/linux/linux-2.6.36/arch/x86/xen/mmu.h

   1 #ifndef _XEN_MMU_H
   2
   3 #include <linux/linkage.h>
   4 #include <asm/page.h>
   5
   6 enum pt_level {
   7         PT_PGD,
   8         PT_PUD,
   9         PT_PMD,
  10         PT_PTE
  11 };
  12
  13
  14 bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
  15 bool install_p2mtop_page(unsigned long pfn, unsigned long *p);
  16
  17 void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
  18
  19
  20 void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
  21 void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
  22 void xen_exit_mmap(struct mm_struct *mm);
  23
  24 pteval_t xen_pte_val(pte_t);
  25 pmdval_t xen_pmd_val(pmd_t);
  26 pgdval_t xen_pgd_val(pgd_t);
  27
  28 pte_t xen_make_pte(pteval_t);
  29 pmd_t xen_make_pmd(pmdval_t);
  30 pgd_t xen_make_pgd(pgdval_t);
  31
  32 void xen_set_pte(pte_t *ptep, pte_t pteval);
  33 void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
  34                     pte_t *ptep, pte_t pteval);
  35
  36 #ifdef CONFIG_X86_PAE
  37 void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
  38 void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
  39 void xen_pmd_clear(pmd_t *pmdp);
  40 #endif  /* CONFIG_X86_PAE */
  41
  42 void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
  43 void xen_set_pud(pud_t *ptr, pud_t val);
  44 void xen_set_pmd_hyper(pmd_t *pmdp, pmd_t pmdval);
  45 void xen_set_pud_hyper(pud_t *ptr, pud_t val);
  46
  47 #if PAGETABLE_LEVELS == 4
  48 pudval_t xen_pud_val(pud_t pud);
  49 pud_t xen_make_pud(pudval_t pudval);
  50 void xen_set_pgd(pgd_t *pgdp, pgd_t pgd);
  51 void xen_set_pgd_hyper(pgd_t *pgdp, pgd_t pgd);
  52 #endif
  53
  54 pgd_t *xen_get_user_pgd(pgd_t *pgd);
  55
  56 pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
  57 void  xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
  58                                   pte_t *ptep, pte_t pte);
  59
  60 unsigned long xen_read_cr2_direct(void);
  61
  62 extern void xen_init_mmu_ops(void);
  63 extern void xen_hvm_init_mmu_ops(void);
  64 #endif  /* _XEN_MMU_H */